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Low sensitivity in FID after performance a P.M.

Cesarmed13

We got low sensitivity in FID after performance a P.M, (we changed all consumables) and performance back out of the column . The system is a 7890A (SSL-FID-ALS)

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  • 0

    Dear Casarmed13,

    With low sensibility after P.M. I see you replaced many parts on detector but could you check again many steps below

    + volume sample injected correct? check your syringe or replace.

    + replace a new one liner and septa?

    + split ratio is it correct?

    + if you replace split vent trap, you can tighter the screw again.

    + gold seal

    + ferrule 

    And very important you should be check split flow and purge flow.

Reply
  • 0

    Dear Casarmed13,

    With low sensibility after P.M. I see you replaced many parts on detector but could you check again many steps below

    + volume sample injected correct? check your syringe or replace.

    + replace a new one liner and septa?

    + split ratio is it correct?

    + if you replace split vent trap, you can tighter the screw again.

    + gold seal

    + ferrule 

    And very important you should be check split flow and purge flow.

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